diff --git a/pytype_runner.py b/pytype_runner.py
index 4bd59b59..88af57b4 100755
--- a/pytype_runner.py
+++ b/pytype_runner.py
@@ -4,7 +4,7 @@
 import selectors
 import shlex
 import sys
-from logging import INFO, basicConfig, info
+from logging import INFO, basicConfig, info, fatal
 from subprocess import PIPE, Popen
 from typing import Dict, List, TextIO, Tuple
 
@@ -150,6 +150,9 @@ def to_markdown(me, fp, returncode, results, branch_url):
 
 
 def setup_and_run_pytype_action(script_name: str):
+    if sys.version_info > (3, 11):
+        fatal("pytype does not yet work well enough when hosted on Python 3.12")
+        sys.exit(5)
     config = load("pyproject.toml")
     pytype = config["tool"].get("pytype")
     xfail_files = pytype.get("xfail", []) if pytype else []
diff --git a/tox.ini b/tox.ini
index 190f6b1c..e1a39ff4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@
 # .github/workflows/main.yml is set up to test with 3.11, 3.12 and 3.13 in parallel.
 # Therefore, use three environments: One with 3.11, one with 3.12 and one with 3.13:
 #
-envlist = py311-covcp-check-mdreport, py312-cov-pytype, py313-cov-lint-pyright
+envlist = py311-covcp-check-pytype-mdreport, py312-cov, py313-cov-lint-pyright
 isolated_build = true
 skip_missing_interpreters = true
 requires =